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Dell, Lenovo Adding Solar Option for PCs

An anonymous reader writes "Lenovo just announced a solar power option for PCs, and Dell is about to do the same, according to Advanced Energy Group. But the solar hardware weights 86 pounds and costs $1,300! Lenovo officials admit they had to do this to reach the 75% mark to gain EPEAT Gold status; Dell couldn't be reached for comment. Hopefully the technology will get smaller and more affordable."

48 of 184 comments (clear)

  1. All right! by iknowcss · · Score: 5, Funny

    Just what I need! Solar power for my desktop computer! This will go great right next to my windo-- wait. I don't have any windows. Oh, shit.

    --
    Life is rarely fair. Cherish the moments when there is a right answer.
    1. Re:All right! by Anonymous Coward · · Score: 5, Funny

      Just what I need! Solar power for my desktop computer! This will go great right next to my windo-- wait. I don't have any windows. Oh, shit. Just buy some more light bulbs and mount them over the solar cells. Incandescent bulbs tend to work the best in my opinion. And if it gets too warm then you should turn on your AC.
    2. Re:All right! by g0dsp33d · · Score: 3, Insightful

      Just wait until you hear about my solution for server rooms...

      --
      lol: You see no door there!
    3. Re:All right! by geobeck · · Score: 3, Funny

      getting a kick in the face from some wanker who has placed in trousers round his ankles.

      That sounds like quite a trick.

      --
      Find environmentally and socially responsible products on http://buy-right.net
  2. I can't wait... by Donniedarkness · · Score: 4, Funny
    ...to get solar power for my laptop!

    Maybe Dell could get a rep for being "pro-fitness", too, with that 86 lb. power supply.

    --
    Earn a % of cash back from Newegg, Tiger Direct, Walmart.com, and more: http://www.mrrebates.com?refid=458505
  3. Batteries Included by Doc+Ruby · · Score: 4, Interesting

    PC tech has financed huge tech returns for non-PC products, especially in power conservation and management. I'd like to see Dell and other PC OEMs evolve into supplying solar power systems (with embedded PCs for ease of open integration and smart operation) for general use in our homes, offices and mobile.

    A real winner would be mobile phones whose cases all recharge off solar (or just ambient light, even indoors). That kind of mass market could drive down the price:performance curve, open up the tech to all our powered devices. And make the "solar look" popular that even people who buy on nothing but fashion (most people) would start saving power with all these accessories.

    --

    --
    make install -not war

    1. Re:Batteries Included by NeilTheStupidHead · · Score: 3, Informative

      Unfortunately, cellphone batteries are used for vendor lock-in, you can only easily get a new battery directly from the manufacturer at a steep price. I agree that the battery should be an insert with a simple cover over it, but then, when someone makes a phone smaller than a 'standard' cell phone battery, the whole thing goes out the window. And there seems to be this fascination for making cell phones un-usably small. I have a samsung A860, which is the largest phone I could find at the time and I'll be keeping it when I renew my contract as all the new phones I look at have buttons that are too small to push.

      When it comes to watch batteries (properly called button cells): Why do we need different types of 'normal' batteries? (i.e. AA, AAA, D, etc) I seem to remember from school that larger batteries tend to have better output in terms of Amp-Hours, but large batteries are not always practical. Would you carry around an MP3 player that used a D battery instead of an AAA or AA? Very small devices, like hearing aids and watches, need very small and/or very thin batteries, but things like calculators can have larger batteries for longer life span. As far as visually undistinguishable batteries, take a close look at the package, they're often the same battery from a manufacturer with a different numbering scheme or the same battery with different innards (like Ni-cad vs Li-ion). Just look at the wikipedia entry for the extremely common LR44 battery, there are dozens of manufacturer or retailer part numbers. The IEC defines standards for naming, but can't force anyone to use their system of nomenclature. I would double check, but in my experience, two identical-looking button cells are often the same battery but for a manufacturer's stamp.

      --
      Lose: misplace or fail || Loose: not bound together
  4. Yep. by Anonymous Coward · · Score: 2, Interesting

    This is exactly how you are going to "save the planet" by solving the energy problem, folks. Not by not using coal/oil plant electricity. But by captalism: profiting from selling clean energy solutions.

    1. Re:Yep. by toppavak · · Score: 4, Insightful

      In terms of "saving the planet" or solving any kind of energy problem, these kinds of bottom-up approaches simply wont do much in most industrialized countries. Its simply much more efficient (energy efficient, cost efficient etc) to centralize power generation- even considering losses through distribution. Even if we expand our power generation capabilities through the consumption of oil or coal, using electric cars that charge off of that infrastructure will be more efficient than placing small ICE in cars they way things are currently done. In industrial-scale facilities its also easier / cheaper to install highly effective scrubbers than it would be to install similar technology in every single vehicle / generator currently in use. Replace those oil/coal/gas burning generators with nuclear and your overall positive impact on the environment goes through the roof. The point is, putting a few small and expensive solar panels on your house to run a computer isnt going to make a difference well, not as much of a difference anyways, as centralized industrial-scale efforts for alternate technologies. Its cheaper, its easier, its more painless and it doesnt really require people to change their lifestyles. Stop asking people to drive less, pressure your local government to phase in more and better public transportation systems. Enforce more rigorous controls on vehicle efficiency and put in place requirements for the implementation of transitional technologies such as hybrid and LPG powered systems. Build more nuclear and wind power plants, start a reprocessing program to reduce the amount of hazardous waste coming out of the nuclear plants. Expand power distribution infrastructure in anticipation of a greater demand as centralized power is utilized more for plug-in type vehicles and public transportation systems. Phase out oil and coal fired plants, keep expanding nuclear generation capabilities, increase funding in power storage research and invest heavily in battery recycling programs. With aggressive governmental and corporate backing of such policies I dont think it would be unreasonable to ban the ICE within the next 50-75 years, and either have significantly reduced or completely ceased the production of electricity through the consumption of coal and oil. It wouldnt matter if oil is going to run out in 50 years or 150 if we're prepared for it. It doesnt matter if we've caused the globe to heat up yet or not, it will never be something we have to worry about. All this bickering over whether its a problem now or not is completely irrelevant, even if it isnt yet, it will be. Maybe not in the next century, maybe so. It doesnt matter. The problem with democracies is that most are almost universally incapable of planning for the future. It doesnt fucking matter if its a problem today or not if its going to be a problem in the future. Expand our fiber networks today, phase out environmentally harmful technologies today, push the envelope of human technology and progress. FUCKING DO SOMETHING PEOPLE. We have the technology, we have the resources. It will cost a lot yes, but nowhere near as much as enacting hasty fixes to save our asses once its crunch time.

  5. What is that i hear? by weirdcrashingnoises · · Score: 4, Funny
    Hopefully the technology will get smaller and more affordable.

    ...and a resounding "DUH" was heard across the lands...

    --
    sigs... don't talk to me about sigs....
    1. Re:What is that i hear? by InvalidError · · Score: 2, Interesting

      Not quite sure how this would be possible.

      Consumer-grade panels are less than 20% efficient, an average PC with an average monitor and some gadgets attached use about 150W, at ~12h/day, this is about 1.5kWh/day. There is usable sunlight less than 8h/day so the solar array needs to provide at least 600W during that period under worst-case lighting conditions to enable fully off-the-grid operation and this requires at least five square meters of said consumer-grade panels. With much of the usage occuring outside usable illumination hours, the battery needs to store about 1kWh. At this point, you have to take your pick between an inexpensive 40kg set of SLA batteries, a more expensive 30kg NiMH set or a very expensive and potentially spontaneously-combusting 20kg lithium-polymer one.

      The weight is a function of battery technology, the size is a function of solar panel efficiency. All are improving in many ways but these technological advancements are incremental, slow and expensive. For the time being, I would settle for replacing the 7.2Ah batteries in my BX1000 UPS by external 100Ah ones (~2kWh reserve), strapping an alternator to a stationary exercise bicycle and pedal for a while every couple of hours... much less expensive, more portable (try packing and re-deploying a 1kW array) and available nearly whenever/wherever I am.

      Because the cost per watt of solar energy is currently pretty high, solar makes little sense as anything other than a statement. When solar panels will be available under $100/kW in the ~20% efficient grades, solar will become much more interesting - at least for people who live close enough to the equator to be spared crazy frosty winter ice storms.

    2. Re:What is that i hear? by InvalidError · · Score: 2, Interesting

      For low-power battery-operated equipment, solar can open interesting possibilities since the application already contains a battery and charge controller... all that's needed is exposed surface area and you can, even if you fail to go completely unplugged, at least extend your battery life by a significant amount: a cell-phone on standby draws less than 10mA, which is within the realm of what a cell-sized solar panel could provide at the required ~4V.

      Dunno for your original comment... it kind of made it seem like improving battery/solar cell technology was trivial. If you look at progress curves, battery energy density and solar cell efficiency have not been doubling every 18 months... the progress is more on the scale of single-digit percentile points each year between major breakthroughs, trailing a very long way behind display and chip technologies. Power-conversion technology has been there for years, we need batteries and solar panels to catch up.

      If Moore's "law" started applying to battery energy density and solar cell efficiency tomorrow, most of our energy problems would solve themselves over the next three years!

  6. How many trees... by Tx · · Score: 4, Insightful

    ...could you plant for $1300? That's something many environmental types love to ignore. They spend large amounts of money on things that have pretty small environmental benefits, and then say "every little bit counts" and so forth. Whereas what they should be asking is "how could I spend this money so as to do the most good/least damage to the environment?"

    --
    Oh no... it's the future.
    1. Re:How many trees... by Dunbal · · Score: 5, Funny

      could you plant for $1300? That's something many environmental types love to ignore.

            but if i plant trees then there will be too much shade to run my solar PC, you insensitive clod!

      --
      Seven puppies were harmed during the making of this post.
    2. Re:How many trees... by 2short · · Score: 2, Insightful

      Well, you'd have to buy some deforested land to plant them on, so not very many; and planting trees is mostly a stupid way to help the environment anyway. If there's enough incentive to cut trees down, you won't keep up by planting them, and if there isn't, they'll plant themselves. I consider myself an "environmental type" because when I spend money on things that benefit me, I try to do it in ways that don't have a negative impact on shared resources. Planting trees does little for the environment, and squat for me.

    3. Re:How many trees... by ceejayoz · · Score: 2, Insightful

      Most things are clunky, rickety, and expensive when first invented. There has to be a starting point.

    4. Re:How many trees... by Antony.Muss · · Score: 4, Funny

      When you buy a plane ticket, you don't also thereby purchase therapists for the prostitutes whose lives you're ruining there, or make up (with medical coverage) for the STD pandemic you're helping to cause by entering the market for prostitutes there. If prostitution leads the women involved to up and die, be beaten by their johns and tricks, etc, etc, you're not paying for ANY of that, even though you're CAUSING IT.
      I am a courteous John who never hurts his prostitute. I'm improving her live by outcompeting abusive Johns, like a bacterium that outcompetes penicillin-resistent bacteria, which incidentally she has.
  7. And so begins the rush.... by downix · · Score: 2, Interesting

    First computers and cell phones, then cars which run off of batteries, but use solar panels while sitting at the mall or work parking lot, and finishng up with solar farms running all of our electrical needs through smart reduction of power demands...

    Ok everyone, I feel a hearty round of kumbaya coming on.... **ducks the vegetables**

    --
    Karma Whoring for Fun and Profit.
  8. Once again copying Apple by Twid · · Score: 4, Interesting

    Once again copying Apple: PowerBook: Solar Powered Solutions - and only 13 years after this support article was written. :)

    Pics here.

    Someone told me that one of the *old* powerbooks has a replacable top panel in which there was some sort of official apple solar panel option. I did some googling but couldn't find any evidence of that.

    --
    - "When you want something with all your heart, the entire universe conspires to give it to you" -Paulo Coelho
  9. Bah by antifoidulus · · Score: 5, Funny

    just let me know when they provide a nuclear option

  10. Wait for what? by DaleGlass · · Score: 4, Informative

    Solar laptop solutions are sold by many companies already. You can get it as a foldable panel, panels on laptop bags, panels that can be glued to the back of the screen (probably suboptimal), and even a solar jacket

    They're available in all sorts, from cheap ones that can only slowly charge the battery (though they seem to be able to provide part of the required power while the laptop is on, extending the battery's life), to more expensive ones that produce enough power to keep the laptop on, assuming favorable light levels of course.

    1. Re:Wait for what? by CaptnMArk · · Score: 3, Informative

      Unfortunately most laptop screens dont view at all well in sunlight.

    2. Re:Wait for what? by g0dsp33d · · Score: 5, Funny

      Neither do most slashdotters :-p. Sorry Mods, couldn't resist.

      --
      lol: You see no door there!
    3. Re:Wait for what? by Turmoyl · · Score: 3, Informative

      I use a fold-able, portable, 6 panel, 3 pound solar solution for my ThinkPad X60s which puts out about 12W in direct sunlight. I have tuned the laptop's power usage to be between 12W and 15.5W when operating.

      With this setup I can run on the smallest battery Lenovo offers for the unit, a 4-cell Li-Ion good for about 1.5 hours, for a little over 10 hours. If I simply close the lid, thereby turning off the screen, the usage goes down to about 6W so the laptop can charge while running. Shutting it down for a full charge in direct sunlight takes about 2.75 hours.

      However, my desktop unit, like everyone else's, needs much more power. Even excluding the monitor my primary desktop takes about 85W at idle and up to 300W when gaming, burning a disk, etc. I even saw 450W once when I was pushing the system harder than usual.

      The PV setup for my laptop is about 1.5x the size of the laptop. Now think about how big an array I would need (at the same efficiency for my desktop. You're talking desk-sized at the smallest, wall-sized at the largest.

  11. Or build your own for $1000 less by Plocmstart · · Score: 5, Informative

    Build your own for around $300: http://www.energyrefuge.com/how-to/solar_power_generator.htm
    This is essentially the same thing: a solar panel, battery charger, deep-cycle battery, and (optionally if you don't have a 12V laptop adaptor) a power inverter. The solar cell is what costs the most. The battery is what weighs the most.

    1. Re:Or build your own for $1000 less by Otter · · Score: 2, Insightful
      Sure, but that doesn't help the computer makers check a box on the feature list, which is the whole point here.

      I doubt if they even want to sell any. Do you think Dell wants to be taking support calls about solar panels? They probably deliberately priced it unattractively.

  12. But... by Epsillon · · Score: 2, Funny

    ...will it run Solaris?

    Joking aside, this is something I have been toying with for the past few months. I have a couple of polycrystaline panels on the roof of the workshop and a small LV controller/wet battery arrangement. Getting LV PSUs for standard PC hardware is a pain, though. They are available, and the beauty of them is that you don't have to faff about with DC-AC inverters, but they're more than double the price of a high-end AC PSU.

    There are also those small PSU modules for the likes of Via's EPIA mini-ITX boards that will supply the other voltages from a single 12V feed. The main problem with these is that they supply the board with 12V directly from the source. With Lead-acid and solar, you can bet that this will vary with load, time of day, weather and other factors. The best solution for off-grid solar is a 24V system with a real 24V DC-DC PSU that will regulate the 12V rails. As soon as I am comfortable remortgaging the house I may get one...

    --
    Resistance is futile. Reactance buggers it up.
    1. Re:But... by Chris+Mattern · · Score: 4, Funny

      ...will it run Solaris?


      Yes, but it doesn't support Eclipse.

      Chris Mattern
  13. Is it possible to be green and stupid? by Anonymous Coward · · Score: 3, Interesting

    When we factor in the environmental and monetary cost of producing this product (panels and battery systems) to run a PC which would be practically free in terms of cost and carbon emission to run on the grid in many countries...I'm left scratching my head... how is this a good deal for either the environment or the buyer?

    If you really want to save the planet take that $1300 and use it for a down payment on a ground source heat pump for your home.

  14. What i would like to see is Bike powered setups by RobertLTux · · Score: 2, Interesting

    Who here works in a cube farm and doesn't see on a daily basis a few people that could stand to do the exercise and would be better off generating power for the folks that are effective. It would work (and we would get healthier geeks to).

    --
    Any person using FTFY or editing my postings agrees to a US$50.00 charge
  15. trees and solar by zogger · · Score: 3, Insightful

    ...here, have a few freebie trees on me! Go ahead, claim a dozen, they are cheap! You have to go way out of your way to NOT have trees gradually take over pastureland. We have untold *thousands and thousands* of wild trees sprout all on their own here every year. Carbon offsets and new green taxes and whatnot though are scams, pure bloated governmental bureaucracy/corporate dodgy scams.

    With that said, solar PV *works* and works well, and is affordable now if you extrapolate probable electricity costs for a coupla decades into the future. I have a home made version of what is in the article (single good sized panel, charge controller, storage battery on a handtruck so it was movable, tied in with a long heavy gauge extension I made from scrap welding cables, and those went to more storage batts) and ran my old computer (a laptop, but it is what I had then) from it for years.

    I am extreme pro environment, and I walk the talk and slap my wallet where my mouth is and have for a long time now, but I warn folks, watch for the conjobs from the globalist green movement. Parts of it are righteous, parts of it are pure con, it isn't all one or the other. We can do much better with energy conservation in our buildings and vehicles and gadgets (dropping our demand while still enjoying technology), and we certainly can produce a lot more green power now that economies of scale are seriously ramping up with solar and wind and geothermal and hydro, and because we can see how destructive a lot of "conventional" power is, but beware all the "new carbon taxes" and "carbon trading" and suchlike, they are designed to separate you from your cash and add another burdensome layer of onerous power tripping laws over you and add in even more disgusting middleman "traders" to skim off working guys wealth. So go green, but do it because you like it and we need it as a planet and it works and makes sense and cent$, not because they force you to swallow some serious propaganda and BS.

    1. Re:trees and solar by BlueParrot · · Score: 3, Insightful

      With that said, solar PV *works* and works well, and is affordable now if you extrapolate probable electricity costs for a coupla decades into the future.

      It works if you ignore that it has a poor energy/dollar ratio as compared to a wind turbine. Even if you ignore all other short comings of solar photovoltaic cells, you still won't get away from this simple fact. Wind power is cheaper. MUCH cheaper. Of course, on life cycle costs modern nuclear power plants are cheaper still, but I suspect you don't like those or won't believe me, so I'm using wind power instead. It doesn't really matter, the conclusion is still the same.

      There is one advantage to solar however, and it is why you use it on satellites and other remote installations. It requires very little maintenance, no refuelling, and it is extremely portable. In most applications a battery will prove to be more suitable, but in certain niche applications where recharging or refuelling is impractical ( as it is on a satellite or Mars probe ) solar cells are popular.

      For laptops I'd rate it as simply stupid. A simple conservation of energy calculation against incoming insulation and the capacity of a Li-ion battery should make this obvious. Maybe if you are studying the ecology of a remote pacific Island or something, but for normal consumers it is just a waste of cash.
  16. Allright, I'll bite by empaler · · Score: 2, Interesting

    Once again copying Apple: PowerBook: Solar Powered Solutions - and only 13 years after this support article was written. :)

    Pics here.

    Someone told me that one of the *old* powerbooks has a replacable top panel in which there was some sort of official apple solar panel option. I did some googling but couldn't find any evidence of that.
    From the linked page:

    Note: This article provides information about a non-Apple product. Apple Computer, Inc. is not responsible for its content and mention of this product should not be interpreted as a recommendation by Apple. Please contact the vendor for additional information. Also, as far as I can tell, the products are no longer available (neither in original form, nor in "updated" forms).

    To summarize: Hubris.

    Yese, someone made something similar a decade ago. Are you saying that this Lenovo thinks this is so wildly succesful they'd better get into the market?
    Logically speaking, when the 2007 version weighs in at almost 50 kg and does not even completely power the kit, I think it's more to do with the tech being immature rather than being first to market. I can also market completely half-assed stuff, but then my company would also die and leave my domain for the sharks.
  17. Low power consumption is a more worthwhile goal. by bcrowell · · Score: 2, Insightful

    A more worthwhile goal is just to reduce the power consumption of your PC. The computer referred to in TFA draws 45 W, which is nice and low. I would just call that a victory and stop there. When I built my most recent machine, I decided to go for low power, and without using any particularly exotic hardware, I managed to get it down to 98 W, including the monitor, when the CPU is idle. It's a nice, snappy computer, with a dual-core AMD x64 CPU. If you're shopping for a power supply, make sure and get an 80PLUS model. Another reasonable thing to do, if you're concerned about your impact on the environment, is if you're just going to do word processing, programming, and web browsing, don't buy a gaming machine with a video card that gets hot enough to fry an egg.

    The solar thing being discussed in the article is clearly a silly gimmick. You'd get more environmental bang for the buck by installing photovoltaics on the roof (and that's an option for businesses as well as homeowners). YMMV, but where I live in Southern California we get a lot of sun, and my roof faces south, so photovoltaics ended up being a good deal for me. (It's hard to estimate how long the investment will take to pay for itself, because it depends sensitively on how much electric rates go up in the future. The historical trend has always been up, but it's hard to predict exactly how much more rates will go up in, say, the next 10 years.) There is at least one theoretical situation in which a special-purpose solar panel for a specific device can make sense, and that's where you have a device that uses a lot of power, and can run on DC. The classic example is pool pumps. Pool pumps tend to be insane power hogs, and they use DC motors, so you can actually be more efficient by using special-purpose photovoltaics than plugging into the AC from a general-purpose PV system's inverter. A computer can also run on DC, and I believe in some big data centers they do use hardware that runs on DC, because it saves the electricity that would have been wasted by inefficiency in the individual computers' power supplies. If you were running such a center in an area with a lot of sun, and you had some roof space available, it could certainly be smart to get a big PV system installed, without an inverter, to supply DC to the machines.

  18. Trees clean up pollution...how exactly? by SuperBanana · · Score: 3, Insightful

    That's something many environmental types love to ignore. They spend large amounts of money on things that have pretty small environmental benefits, and then say "every little bit counts" and so forth. Whereas what they should be asking is "how could I spend this money so as to do the most good/least damage to the environment?"

    "They" are "ignoring it" because trees aren't the largest source of oxygen on the planet- phytoplankton in the oceans are. I've seen numbers as high as 90%, but I think most scientists would agree it is "more than half."

    They" are "ignoring it" because trees don't remove industrial pollutants, they don't bring much in the way of renewable energy (they do have lots of side benefits, like preventing erosion, providing habitat for ecosystems, shading the ground and buildings from solar radiation in hot areas, providing renewable construction materials, etc) and so on. Planting trees does jack shit to address the pollution from power plants (more than a third of the United States electricity comes from coal, of which the soot contains radioactive particles among other things), planes, trains, and trucks.

    The problem here is not that manufacturers aren't trying; it's that these companies make a business out of reselling other people's stuff. That Dell laptop was not actually designed by Dell; Apple is one of the few companies to design in-house. Dell goes shopping each year in Asia and sees what OEM laptops it likes, and then slaps their label on 'em.

    What is needed is a company other than Advanced Energy Group slapping a $1400 price tag on what is essentially:

    • A $30 cart with wheels and a handle
    • A $600 dollar solar panel (120W Sunwise)
    • $50-100 in batteries (2-3 car batteries will do in a pinch. AGMs are a little more expensive.)
    • A $30 inverter
    • A $30 charge controller (not sure on this one, but you can get pretty cheap+simple if need be.)

    Far as I can see, they're making a 100% profit margin ON TOP OF RETAIL PRICES for all those components. The problem with most solar "technologies" is that everyone is exceptionally greedy. If they priced the stuff with more reasonable profit margins, they'd sell quite a bit more of 'em.

    1. Re:Trees clean up pollution...how exactly? by adolf · · Score: 2, Interesting

      And this, ladies and gentleman, is why one should never post to Slashdot before consuming coffee.

      The point I was attempting to make, "would you rather sell a nickle twenty times, or a dollar just once?" is an attempt to illustrate why, exactly, it is that profit margins are so high on low-volume electronics -- or anything else of low volume, for that matter.

      Yeah, sure, they could drop the price and sell a lot more of the photovoltaic kits.

      But they're not trying to sell PV kits, per se, but they are instead just trying to make money. Maximizing profit is what corporations exist to do. Selling more stuff doesn't always mean earning more profit, but it always means more work.

      If they figure the proper markup (ie, the point at which profit is maximized) is 2x retail, that's their problem, isn't it?

      If you think you can sell it cheaper, at such miniscule volumes as these things are likely to move at, then please feel free to do so. Else, please STFU.

      HTH. HAND.

  19. Re:Doesn't help.. need an "inside-out" online UPS by Technician · · Score: 2, Informative

    What you are looking for is here;

    http://www.outbackpower.com/

    My dad has one of these in his house. When the batteries are topped off, it kicks over an auxiliary load (part of the rest of the house such as freezer and some additional lights) and when that drops the charge, it switches the auxiliary load back to shore power. His computers used for video editing of home movies is on the solar system 24/7. The solar system and windmill is his UPS. His system provides about 30% of his total load. It still doesn't pick up the electric water heater, electric stove, electric dryer, etc. It just isn't big enough yet.

    He sized the system to never have a surplus. The idea of buying power retail and paying for a bi-directional installation (cogen) and selling at wholesale rates didn't make any sense.

    --
    The truth shall set you free!
  20. You're underestimating the size of the solar panel by stefanlasiewski · · Score: 2, Informative

    I agree this could be provided cheaper, but you underestimated the solar power requirements by a long shot.

    The solar panel suggested in your link is an 18-watt ($175) solar panel, and is inadequate to charge the 60-Ah battery included with the Xantrex Xpower 1500 Powerpack. A complete charge would take several days of full sun.

    The Lenovo & Dell packages include a 110-watt solar panel, which sells for about $6-700 dollars at Real Goods or Mr. Solar.

    For $1500, you could by a decent laptop for $1000, and then assemble your fun $300 solar/battery kit.

    --
    "Can of worms? The can is open... the worms are everywhere."
  21. Re:ACE OF BASS DIED FOR YOUR SINS by mstahl · · Score: 3, Funny

    Best AC comment EVER. Way to go as far off-topic as humanly possible (without, of course, meta-commenting on the hilarity of an AC comment).

  22. Mod Parent Up! by Conspicuous+Coward · · Score: 4, Insightful

    Solar powered PC's for 1500$ are a prime example of what's wrong with the consumerist approach to environmentalism.
    I doubt whether the energy saved by running a PC off this thing will even offset the energy used in it's manufacture, but hey it sounds good and people go "aren't dell good environmentalists".

    Everybody goes out and replaces their (perfectly functioning) fords with a "green" Prius. Totally ignoring the fact that manufacturing the Prius itself requires large amounts of energy, therefore emitting a lot of carbon. It would be better for the planet to keep to old car for a few years, or even better to use public transport.

    The consumerist approach to environmentalism is like trying to fight WWII by asking individual members of the population to buy guns and go out and shoot a few Germans in their spare time. If governments took this problem remotely as seriously as they claim to there would be proper regulation, as indeed there must be. Consumerism will not solve this problem, we need people who can actually add up working out how existing resources can best be directed to save the planet; not the bloody marketing department at dell.

  23. There are a couple things they could do easily. by Ungrounded+Lightning · · Score: 2, Insightful

    If they really want to help out with alternative energy usage there are a few things they can do easily:

    - Design the power supplies and charge controllers of laptops to accept reasonably "wild" voltages on the input jack, publish the specs and limits, and approve direct connection to panels or 12v renewable energy systems. Alternatively they could make available an INEXPENSIVE charging brick that accepts such voltages on its input.

    By 'reasonably "wild"' I mean the voltages that would appear off, say, a 12v panel (about 14.5v) or a 12V renewable-energy battery bank (about 13.5, up to 14.something during equalization). Disconnect at a minimum charge to protect batteries from undercharge would be a good idea, too. (Make it resistant to voltage spikes from switching of inductive loads and it could also be plugged directly into a cigarette lighter in a car as well.)

    Down-converter bricks for 24 and 48 volt systems would be good, too. Working through one step of conversion, rather than running the system's big (and thus lossy) inverter to get power up to 120VAC for a standard brick and then bringing it back down to what the laptop wants, would be a big win.

      - Improve power management (including clock-speed management, disk shutdown, and screen backlighting control) for lowered power consumption when not needed for heavy crunch or display. (For linux: Provide the hooks for the open software to do this.)

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
  24. check your maps for a better idea... by zogger · · Score: 5, Interesting

    ...and before you casually hurl "know it all" insults. I live in georgia, and also own an aeromarine wind power generator, but I use solar for my alternative energy of choice, because it works *much much better* here than wind. There's no one single "best" power source, it depends on use, location, etc. Solar just works hella better here than wind, right now,I am getting decent sun, but the wind is quite calm. Other areas it is way more windy most of the year, but solar might not be as good. Some guys are lucky and can run decent hybrid systems, using both, especially good as wind picks up in the winter when there is less sun, and vice versa. It just depends. Here ya go, look at some solar and wind potential maps

    I've been into alternative energy since the 60s (you??) when I first worked with my dad and we built from scratch some solar heating for our swimming pool (added a month decent swimming both spring and fall for only a couple hundred bucks and some labor), and since that time as a hobbiest and also it was my business for a few years (might be again possibly, the interest has picked up a lot this past year with all the energy cost increases), by actually "doing* stuff with it, everything from solar thermal space heating and solar water heating for household use to making biofuel ethanol and methane, working on superinsulated structures (several of those, best dollars you can spend is more insulation and better windows), etc. etc, along with solar PV and wind. I am fully aware of the pluses and minuses of this or that technique and what stuff costs, etc. This isn't theoretical casual web board commentary from me, it is hands on experience. I don't write code, so I don't comment about that a whole lot, but with alternative energy I can speak from some significant experience. I don't claim to be the expert's expert, because I am not, but I do have a lot of hands on with this stuff and try to keep up with the industry in general terms. And it worked just swell with that laptop, and it also ran a reading light and a small TV and a radio at the same time during the evenings, it wasn't stupid at all, it "just worked" for relatively cheap money, and it has been long paid off and the same rig still works fine, even that original single battery that is going on ten years old now works fine, and the larger battery bank is 8 years old now and works fine.

  25. nope by zogger · · Score: 2, Interesting

    Screw that, it isn't their carbon to tax me on it *again* and I've already pointed out that tree planting is just a way to "feel good" about your pollution, trees are self planting all over the planet, lining up some sort of figures is usless except for those who want more political power over other people or want their money and usually it is both. Really, I am not exaggerating, we have _thousands_ of new baby trees a year sprout up here, will someone give me a wad of cash for that? How about you, where's my check, we "offset" quite a bit of carbon just by letting the woods grow here. Oh,no check? Why not then? Carbon credits and taxes are an authoritarian and globalist greedpig economic and power trip scam. It's the new enron styled invent crap out of thin air trading BS that they slap warm and fuzzy green paint on it so the mouth breather rubes don't notice they are being fleeced and exploited some more. Sure, you can go on purpose plant trees all over, that doesn't mean that a huge number more wild ones don't sprout up every year with not much more than wind and animals moving the seeds around. It's urban "feel good" crap. Makes about as much sense as those weather trading futures they tried, just more scam products from the same accounting school of thought as where the MAFIAA or the DEA pull numbers on what stuff is worth.

    Now don't get me wrong, I am a huge proponent of "going green", living with a light footprint, being responsible, not dicking over the environment, etc, and have been my entire life, but I've just been in this to long to not notice the cons that can get associated with it, and "carbon credits" and "carbon trading" are at the very top of the list.

  26. That was fast! by gandhi_2 · · Score: 2, Interesting

    Generally, we have to wait YEARS after press release to get products! Any "no shit, there they were" already on sale at places like REI...two years ago. REI Brunton makes several kinds, you can even connect some types in series for more watts. I heard we can look forward to polio vaccinations sometime next year too!

  27. Shade. by statemachine · · Score: 4, Funny

    Use the solar panel for shade. Problem solved.

  28. I prefer the biofuel version by BradMajors · · Score: 2, Interesting

    Hamburgers and French fries are feed into a human who then converts the biofuel into electricity by pulling on a string. OLPC will be powered by pulling a string: http://www.engadget.com/2006/07/24/olpc-will-be-powered-by-pulling-a-string/

  29. Unfortunately most laptop screens dont view at all by falconwolf · · Score: 2, Informative

    in sunlight.

    Ah but if you can afford one of these solar power packs, you can also afford a hood or shader for a laptop as well.

    Falcon
  30. not much to it... by zogger · · Score: 3, Informative

    ..do a site survey, use those maps from the link as part of it, look at your wallet and go for it. to me it is like computers, if you wait for the next great thing and price drops-you'll never own a computer. Comes a time you need to just take the plunge, knowing full well ten years from then there will be better deals. so it goes. but..in the meantime you have some guaranteed juice, and it is a lot cleaner as well, both from an environmental standpoint and from the actual sine wave standpoint. As geeks, we all dig electricity, and we all can understand backups and uninterrupted power supplies..so, extrapolate, it's just as good of an idea for your home..

      The good thing about solar is it scales, from a one panel rig (like in the article) at around a grand for the panel and charge controller and battery, etc, to whatever you want to spend, and you can start small and add to it as you want/need.

    With that said, and as I mentioned previously, MORE insulation! You just can't beat not needing any more energy for the same lifestyle! You work it both ways to the middle, drop demand, add to production, eventually those lines cross and you are energy independent, whatever energy bill you are looking at. The big computer guys/server farms finally get it, more efficient servers and virtualization, etc.

      It used to be years ago the electric bill and filling the gastank at the station was a "ho hum, big deal.." cost, but it ain't that way now! Electric energy independence, and eventually transportation independence, two disruptive technology concepts that go to enrich the working dude, instead of keeping him in wallet thralldom forever and a day to the power monopoly guys.

    OK, to really directly answer your question as to the solar heated swimming pool, it was dogsquat easy, you can do it in one afternoon. Several hundred feet of hose, laid out over a south facing garage roof with dark shingles. That's it! You can go a lot fancier but that works. You need a *lot* of hose though. It got hot up there. Tapped into the existing pool pump on the downstream side of the filter, so that the water first got run up through the hose where it picked up heat, then into the pool. Really that easy. It had to be manually turned on and off in the morning using kentucky windage guesstimates and an outdoor thermometer, and that wasn't any big deal either. Today, you could automate that easy with some off the shelf parts and a diverter valve- to the heating coil/not to the heating coil, binary based on outside temps. You could lose heat if you run it too early in the day in other words or space out and make it run all night. I think also different today I would use a single long loop of high temp black hose tubing rather than shorter hoses connected together, but, like I said, was pop's pool I was the grunt helper and that was my first foray into alternative energy. After that we built a solar enclosed patio, just a nice solarium/sunroom, it was quite nice during the winter to be able to go outside and get a little warmish sun in it.

    Any other questions just ask away, glad to oblige.